| 763a31ed7a2bfad22a9cb07f5301a71c0f97ca49 |
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17-Nov-2015 |
Mathieu Chartier <mathieuc@google.com> |
Add immune spaces abstraction
ImmuneSpaces is a set of spaces which are not reclaimable by the GC in
the current collection. This set of spaces does not have requirements
about space adjacency like the old ImmuneRegion. ImmuneSpaces generates
the largest immune region for the GC. Since there is no requirement on
adjacency, it is possible to have multiple non-adjacent applicaton
image files.
For image spaces, we also look at the oat code which is normally after
the application image. In this case, we add the code as part of the
immune region. This is required to have both the boot image and the
zygote space be in the same immune region (for performance reasons).
Bug: 22858531
Change-Id: I5103b31c0e39ad63c594f5557fc848a3b288b43e
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| 0e54cd0d8fc635d3dc8bf88a465fdade151a098f |
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20-Mar-2014 |
Mathieu Chartier <mathieuc@google.com> |
Refactor and optimize GC code.
Fixed the reference cache mod union table, and re-enabled it by
default. Added a boolean flag to count how many null objects,
immune, fast path, slow path objects we marked.
Slight speedup in mark stack processing, large speedup in image mod
union table scanning.
EvaluateAndApplyChanges Before:
Process mark stack time for full GC only:
12.464089s, 12.357870s, 12.538028s
Time spent marking mod image union table ~240ms.
After:
Process mark stack time: 12.299375s, 12.217142s, 12.187076s
Time spent marking mod image union table ~40ms.
TODO: Refactor reference visiting logic into mirror::Object.
Change-Id: I91889ded9d3f2bf127bc0051c1b1ff77e792e94f
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| 38e68e9978236db87c9008bbe47db80525d2fa16 |
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07-Mar-2014 |
Hiroshi Yamauchi <yamauchi@google.com> |
Use the card table to speed up the GSS collector.
Scan only dirty cards, as opposed to the whole space, to find
references from the non-moving spaces to the bump pointer spaces at
bump pointer space only collections.
With this change, the Ritz MemAllocTest speeds up by 8-10% on host and
2-3% on N4. The Ritz EvaluateFibonacci speeds up by 8% and its average
pause time is reduced by 43% on N4.
Bug: 11650816
Change-Id: I1eefe75776bc37e24673b301ffa65a25f9bd4cde
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| 8d562103c3a3452fb15ef4b1c64df767b70507a4 |
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13-Mar-2014 |
Mathieu Chartier <mathieuc@google.com> |
Refactor immune region logic into its own file.
Added immune_region.cc/.h in the collector directory. Changed the
functionality to no longer assume spaces are added to immune region
in ascending order.
Change-Id: Id1d643b3849ad2695e8a151dbbb74a5035644472
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